Involvement of chromosomes #1 and #11 in three cases with myeloproliferative diseases

We describe one case of myeloid metaplasia with a dup(1q21 leads to 1q32), one case of myelomonocytic leukemia with a deletion of 11p (11p12 leads to 11q14), and a case of polycythemia vera with a deletion of 11q (11q14 leads to 11q25) and a presumptive duplication of 1q (1q25 leads to 1q44) via translocation to 6pter.